a shortcut procedure as quick, easy-to use method for design and simulation of multicomponent batch distillation is used to predict the operating condition of recovering xylene from solvent in an existing batch distillation column in benzol refinery. the procedure can be used to investigate the effect of the operating parameters on the operation of column for three possible modes of batch disti...

A shortcut procedure as quick, easy-to use method for design and simulation of multicomponent batch distillation is used to predict the operating condition of recovering xylene from solvent in an existing batch distillation column in benzol refinery. The procedure can be used to investigate the effect of the operating parameters on the operation of column for three possible modes of batch d...

BACKGROUND Central obesity has been suggested as a risk factor for gastroesophageal reflux disease. The aim of this study was to evaluate the association of visceral fat area and other lifestyle factors with reflux esophagitis or Barrett's esophagus in Japanese population. METHODS Individuals who received thorough medical examinations including the measurement of visceral fat area by abdomina...

Distillation columns are complex processes for modeling and controlling. These columns are significant parts of most chemical industries for separation of components. Control of this process is essential for achieving certain purity for products with a minimum cost. However, nonlinearities, multivariable interaction, non-stationary behavior and severity of disturbances inside the column made th...

BACKGROUND Gastroesophageal reflux disease (GERD) is the most common cause of children admissions to pediatric gastroenterology unit and affects about 30% of pediatric population. Body weight and height percentiles of children with GERD and their relationship between presence and the severity of reflux on scintigraphic images were studied. METHODS Patients who underwent reflux scintigraphy be...

OBJECTIVE To examine the impact of fundoplication on reflux related hospital admissions for children with neurological impairment. DESIGN Retrospective, observational cohort study. Setting 42 children's hospitals in the United States. PARTICIPANTS 3721 children with neurological impairment born between 2000 and 2005 who had at least one hospital admission at a study hospital before their fu...

Background/Aim: The aetiology of gastro-oesophageal reflux is largely unknown. The authors’ aim was to examine the relation between lifestyle habits and gastro-oesophageal reflux symptoms. Subjects: Participants of two consecutive public health surveys in Nord-Trondelag, Norway. Methods: In a case control study within the two public health surveys, 3153 individuals who in the second survey repo...